Here is a reaction energy diagram for a hypothetical reaction in which a reactantspecies A converts into a product species E.A - EEDABReaction ProgressIs the overall reaction exothermic or endothermic? And which step is the ratedetermining step?Energy Exothermic and A B is rate determining.Exothermic and B C is rate determining.Exothermic and C D is rate determining.Exothermic and D E is rate determining.Endothermic and A B is rate determining.Endothermic and B C is rate determining.O Endothermic and C D is rate determining.Endothermic and D E is rate determining.

Each elementary step has its own activation energy. If a certain step is a rate determining step,…

Here is a reaction energy diagram for a hypothetical reaction in which a reactant species A converts into a product species E. A - E E Reaction Progress Is the overall reaction exothermic or endothermic? And which step is the rate determining step? Energy

Here is a reaction energy diagram for a hypothetical reaction in which a reactant species A converts into a product species E. A - E E Reaction Progress Is the overall reaction exothermic or endothermic? And which step is the rate determining step? Energy

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Study the following reaction energy diagram: energy reactants Then answer the following questions about the chemical reaction. Does this reaction release or absorb energy? How many transition states occur during this reaction? Could this be an elementary reaction? If you said this reaction could not be elementary, then how many steps are in its mechanism? If you said this reaction could not be elementary, then enter the number of the step in its mechanism which is rate- determining. For example, if the first step is the rate- determining step, enter "1" here. 0 products release absorb neither yes no
11. Draw a potential energy diagram for a two-step reaction in which the activation energies are 10 kcal/mol (first step) and 3 kcal/mole (second step), the intermediate is 5 kcal/mol higher in energy than the reactants, and the products are 1 kcal/mol lower in energy than the reactants. Label both axes and positions on the curve that correspond to reactants (R), the intermediate (I), transition states (TS₁, TS₂), and products (P). Indicate the activation barriers with vertical lines and the labels Ea1 and Ea2.
Consider the reaction R P. Check all of the following that are true when a catalyst is added to the reaction mixture. The Ea for R P decreases. The value [P] / [R] increases .The rate of reaction P R increases. The rate of reaction R P increases.
4. A. B. C. D. E. 5. A. Which one of the following statements is correct? A catalyst that is present in the same phase as the reacting molecules is a heterogeneous catalyst. Elementary steps involving the simultaneous collision of two molecules are bimolecular. Absorption refers to the binding of molecules to a surface. Because the fast step limits the overall reaction rate, it is called the rate- determining step. A balanced chemical reaction equation details the individual steps that occur in the course of a reaction. A reaction NO₂(g) + CO(g) → NO(g) + CO₂(g) obeys the following rate law: Rate = K[NO₂]². What are the units for the rate constant? M¹.S¹
consider the reaction R P. Check all of the following that are true when a catalyst is added to the reaction mixture. The rate of reaction P R increases. The Ea for R P decreases. The rate of reaction R P increases. The value [P] / [R] increases.
The rate law for the reaction H2(g) + 2NO(g) → N2O(g) + H2O(g) was experimentally determined to be rate = k [NO]2 [H2]. Which of the following statements is false? Doubling the concentrations of both reactants would double the reaction rate Tripling H2 concentration would triple the reaction rate The overall reaction order is 3 Decreasing NO concentration by half would decrease the reaction rate 4 times
Use the information given in the following paragraph and energy diagram to answer questions 5-10. The mechanism for the reaction 2A D is illustrated in the following energy diagram where the X- axis is "reaction progress" and the Y-axis is "enthalpy". A is the reactant and D is the product. The reaction has a rate constant of 5.0x102² Mr¹ sec" when no catalyst is present. The equilibrium constant for the overall reaction at 25°C is K [D] = -=1.1×102. [A]² R D 9. You proposed the following mechanism for the overall reaction 2A D based on the energy diagram Step 1. A B (slow), with forward rate constant, k₂ (fast equilibrium), with forward rate constant, k₁, reverse rate constant k.] and equilibrium constant, K₁. Step 2. B 2C Step 3. A+2C D (fast), with forward rate constant, k3 Your classmate pointed out that your mechanism is incorrect. Why is your mechanism incorrect? a. Your mechanism does not incorporate the use of a catalyst b. Your mechanism is not consistent with the experimental…
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Т Е A rxn B с D prog. Е
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QUESTION 7 Match the part of the rate law with the correct term. 2 NO(g) + Cl2(g) --> 2 NOCI(g) 2. rate 3.0 mol2*s A 3.0 mol2*s A. Y rate constant vorder of reaction with respect to NO vorder of reaction with respect to Cl2 В. 1 C. 2 overall reaction order D. 3 QUESTION 8 2.